CA1076804A - Method for growing plants - Google Patents
Method for growing plantsInfo
- Publication number
- CA1076804A CA1076804A CA286,226A CA286226A CA1076804A CA 1076804 A CA1076804 A CA 1076804A CA 286226 A CA286226 A CA 286226A CA 1076804 A CA1076804 A CA 1076804A
- Authority
- CA
- Canada
- Prior art keywords
- cover
- substrate
- seedling
- seed
- growing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/029—Receptacles for seedlings
- A01G9/0291—Planting receptacles specially adapted for remaining in the soil after planting
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/50—Growth substrates; Culture media; Apparatus or methods therefor contained within a flexible envelope
Abstract
ABSTRACT OF THE DISCLOSURE
A method for growing plants in a growing substrate wherein the growing substrate is provided with a water tight cover, and the substrate is moistened to permit germination of the seed to start. The germination, start up of the seed-ling and growth of seedling are permitted to take place under controlled conditions while growing on air slot, until the seedling is established sufficiently for planting. The water tight cover is maintained intact during germination, growth, transport and planting, and then left to be destroyed or decomposed by itself.
-i-
A method for growing plants in a growing substrate wherein the growing substrate is provided with a water tight cover, and the substrate is moistened to permit germination of the seed to start. The germination, start up of the seed-ling and growth of seedling are permitted to take place under controlled conditions while growing on air slot, until the seedling is established sufficiently for planting. The water tight cover is maintained intact during germination, growth, transport and planting, and then left to be destroyed or decomposed by itself.
-i-
Description
~7680~
Field of the Invention This invention relates to a method for growing plants, particularly growing of forest plants, such as spruce and pine.
Background of the Invention As growing substrate for growing forest plants compressed peat is advantageously used, and that substrate has been tested in both so called seed discs and the so called Multlcomp*-system.
A seed disc may comprise a compressed peat disc ;
which carries, in a small recess, one or a couple of seeds and is surrounded by a cover of a sheet material of plastic, for instance. The cover is open downwardly to permit moisture to come into the peat, and upwardly it has a few slits or holes to permit start up of the plant. Such seed discs are placed in ground preparation cavities where the discs absorb moisture and expand. Due to the moisture absorption the ~- seeds grow whereupon the start up of the plant takes place ~ ~
and the roots branch out and go down into the soil through r the opening at the under side of the disc.
The Multicomp*-system comprises small discs of co~pressed peat, each disc carrying one or more seeds, which discs ~` are carried by a suitable support plate having shallow troughs to accomodate one peat disc each. The troughs are ~ nearly without a bottom, so that each disc is carried by a : narrow edge flange. These support plates in turn are carried `
. ~
; on a wire net or the like. After moistening of the peat discs the seeds grow and the plant sta-rts up. The roots branch out strongly towards the under surface and side sur-* Trade markbc/~ -!
`' ' . '' . ' ' .. ' . " . ` . ~ ` . ' ~0'7t~8~
faces of the discs, but they cannot extend much beyond these surfaces, as the roots cannot grow in air. The ~'Multicomp"-method may be classified with the methods which are some-times referred to as "growing on air slot'~, in as much as the peat discs are slightly spaced from each other on the support plates, i.e. there is a small air slot between the discs, and in as much as the support plates in turn are supported on a wire net or the like, spaced from the soil surface, during growing in the nursery.
e seed discs have many advantages, for instance in that the cover thereof provides a very efficient protection against drying out. Further, they are usually made in such a manner that they easily absorb heat, for which reason the temperature therein generally is slightly higher than that of the soil or ambient air, which is of advantage to both the germination of the seeds and the growth of the plants. The seed discs also have the advantages of less ;~
competition from the surrounding vegetation~ less risk for attacks by noxious insects, less risk for freezing up and a very good plant growth. me probably most important ad-vantage of the seed discs is that they are so sturdy and A ' ~ ~:
strong that they may be laid out by means of mechanical imple-ments.
However, the seed discs also have some drawbacks. As they are laid out prior to the germination of the seeds, `
they are sometimes sub~ected to attacks from seed eating rodents. Different means and methods to prevent attack- from rodents have been found to be not fully sufficient. In some instances iit has also been found that the germination has been slightly irregular.
: . ..
10761!3~
Biologically, the "Multicomp"-system has beyond all the advantage that the growing on air slot in peat ..
discs results in a very great number of active roots, which ensures a good start and good growth of the plants. The system is comparatively inexpensive and permits growing of huge quantities of plants within comparatively restricted ;~
spaces, and also the possibility to transport great quantities of plants from ,he nursery to the planting site within very restricted transport volumes~
Among the drawbacks of the "Multicomp"-system should ~ -be mentioned that the individual peat cubes obtained after ~.
moistening and expansion of the discs are susceptible to drying out and are also delicate to handle.
:` Objects of the Invention .:: ' '*
~: One important object of the invention has been to ~ circumvent the above mentioned limitations and drawbacks of :. ~he prior art germination and seedling promoting systems by ~ , providing a germination and seedling promoting method which : .
,...................................................................... : .:
promotes the development of a strong and richly branched ~` 20 out root system of the seedlings and which ensures that the :
`~ seedlings are well established as they are planted outt ~
:. , :
~ . Summary of the Invention ~.,". , .
`; According to the invention there is provided a method ~...................... . .
~ for growing plants such as trees, comprising steps of:
; (a) providing a substantially dry substrate, having at least one seed therein, with a downwardly open cover of water-: 27 impermeable material, the substrate and cover being shaped to be capable of independent erect support on a lower side thereof; (b) at a place remote from the final planting site, ~ ~ moistening the substrate through its downwardly open cover bc/~'-10768~
to enable germination of the seed to start; (c) supporting the moistened substrate so that the dovnwardly open side of the cover and the substrate exposed at such open side are substantially exposed to an air space; (d) while so supported, permitting germination of the seed, and emergence of the seedling from the cover to take place under selected conditions until a substantial root system has been established within the substrate with the downward growth of numerous roots of the seedling being arrested by their emergence through the downwardly open cover into the air space; (e) thereafter, transporting the emerged seedling to the final planting site; and (f) planting it there, the planting consisting of placing the growing seedling, with the arrested emerged roots directed against the surface of the soil, the cover being left thereon intactly.
Brief Figure Description .j '' .
~ In order that the invention may be clearly understood, i~ it will now be described, by way of example, with reference to the accompanying drawing which shows, in section and very schematically, a germination and seedling promoting ; unit to be used with the method according to the invention, ` Description of Preferred Embodiments The plant growing unit comprises a growth substrate in : the form of an expanded peat body 10, covered by a water ~, .. .
` impermeable cover 11 of a thin sheet of plastic material or the like. The cover ll has a small opening 12 at the upper side thereof, and it has a slightly larger opening 13 at the under side thereof. The unit rests on a net or grid shaped support 1~, which in turn rests on a suitable frame 15,16.
,i~J~
bc/ !,~
~107680~
To start with, the peat body 10 consists of a comparatively thin disc of compressed peat which is provided :
with one or more seeds, preferably in a small recess in the upper side of the body. Then, the disc is provided with the cover 11. A plurality of units of th~s kind are then placed on the support 14 and are thoroughly moistened whereby the peat expands strongly.
After some time the seed or the seeds germinate and the '' ;;
. : .
.`~ . .
., , .
~, - 4a -bc/
-.~
~-ff~680`4 start up ~f the seedling takes place whereupon the units are left resting on the support 14 during the growth of the seedling.
During the continued plant growth a richly branched out root system is obtained. This is due to the fact that as the downwardly extending root threads come out through the lowermost opening 13 of the cover they stop growing, as they cannot grow in air, and instead new root threads are branched out into the cubstrate. Therefore, when the seedling is well established in the unit~ there exists `
within the area of the opening 13 a very large number of root threads which are prepared to immediate grow in into the mineral soil, as the plant is placed out in a ground preparation cavity.
By a suitable choice of material of the cover, such as plastic, the heat absorption of the unit may be controlled to suit the climate. The heat radiation from the whole range of wave lengths may be selectively controlled to optimal intensity for the units. The heat emittance during the colder part of the day may be positively affected in the same way. Thus, the unit forms a miniature green-house wh~ch follows the seedling through the nursery~ during the ,.
transport and out to the final planting site. This positive ` effect remains until the plant has grown up and become so big that its own shadow covers the unit.
The expression controlled conditions has been used above to cover maintaining~ in each particular case, the best conditions Eor germination, start up of the seedling and growth of the plant with respect to degree of moisture, ;~ ~
~emperature, fertilization~ termperature of the ambient -,, ~ .
;`, `,' ' ~ ~ 5 ~ `
~L~76~3~4 ::
air etc.
~ t will be reali~ed that the prior art seed disc, which is somewhat complicated in that it has to be provided with some form of protection against attacks from rodents, is utilized in a simplified version for plant growing in a nursery while using a method which slightly resembles the "Multicomp"-system.
The water impermeable cover does not only reduce the risk for drying out and give a better heat maintenance ability but also gives the advantage that the root body of the established plant forms a firm and sturdy unit which can stand considerable stresses by transport and planting, without damages. Further, the method according to the in-vention also permits sorting out and reuse of so called O-units, i.e. units wherein no germination and start up of a seedling has occurred. Of course, this was not possible ~-previously as the seed discs where laid out dry for ger-mination and start up of the seedling at the planting site.
The method according to the invention remedies to a large extent the previous seasonal limitation to the spring and early summer, which has been a problem in the past.
Nhen the seedling is well established in its substrate (the disc), the number of plants that die is small, the growth is excellent and all problems with rodents are naturally avoided.
~ ith a]Ll previously known planting methods it has been necessary to dig down the roots into the mineral soil. Further it has been necessary to pack the soil around the roots.
According to the invention, on the contrary, it is possible to lay out the unit with a living plant on the ground surface, ~0~6~304 wiehout diggin8 it down, which is completely unique. During this phase, the unit itself forms a protection against evapo-ration also from the ground. The roots may see~ their way down into the mineral soil under the hide of the unit.
The active root thread tips resu]Lt in that the roots grow out fast so that the plant grows fixed to the soil in the shortest possible time~ ~
: ~ i ,~
.
'' , ,`~ :
~ .
'' '',''`
Field of the Invention This invention relates to a method for growing plants, particularly growing of forest plants, such as spruce and pine.
Background of the Invention As growing substrate for growing forest plants compressed peat is advantageously used, and that substrate has been tested in both so called seed discs and the so called Multlcomp*-system.
A seed disc may comprise a compressed peat disc ;
which carries, in a small recess, one or a couple of seeds and is surrounded by a cover of a sheet material of plastic, for instance. The cover is open downwardly to permit moisture to come into the peat, and upwardly it has a few slits or holes to permit start up of the plant. Such seed discs are placed in ground preparation cavities where the discs absorb moisture and expand. Due to the moisture absorption the ~- seeds grow whereupon the start up of the plant takes place ~ ~
and the roots branch out and go down into the soil through r the opening at the under side of the disc.
The Multicomp*-system comprises small discs of co~pressed peat, each disc carrying one or more seeds, which discs ~` are carried by a suitable support plate having shallow troughs to accomodate one peat disc each. The troughs are ~ nearly without a bottom, so that each disc is carried by a : narrow edge flange. These support plates in turn are carried `
. ~
; on a wire net or the like. After moistening of the peat discs the seeds grow and the plant sta-rts up. The roots branch out strongly towards the under surface and side sur-* Trade markbc/~ -!
`' ' . '' . ' ' .. ' . " . ` . ~ ` . ' ~0'7t~8~
faces of the discs, but they cannot extend much beyond these surfaces, as the roots cannot grow in air. The ~'Multicomp"-method may be classified with the methods which are some-times referred to as "growing on air slot'~, in as much as the peat discs are slightly spaced from each other on the support plates, i.e. there is a small air slot between the discs, and in as much as the support plates in turn are supported on a wire net or the like, spaced from the soil surface, during growing in the nursery.
e seed discs have many advantages, for instance in that the cover thereof provides a very efficient protection against drying out. Further, they are usually made in such a manner that they easily absorb heat, for which reason the temperature therein generally is slightly higher than that of the soil or ambient air, which is of advantage to both the germination of the seeds and the growth of the plants. The seed discs also have the advantages of less ;~
competition from the surrounding vegetation~ less risk for attacks by noxious insects, less risk for freezing up and a very good plant growth. me probably most important ad-vantage of the seed discs is that they are so sturdy and A ' ~ ~:
strong that they may be laid out by means of mechanical imple-ments.
However, the seed discs also have some drawbacks. As they are laid out prior to the germination of the seeds, `
they are sometimes sub~ected to attacks from seed eating rodents. Different means and methods to prevent attack- from rodents have been found to be not fully sufficient. In some instances iit has also been found that the germination has been slightly irregular.
: . ..
10761!3~
Biologically, the "Multicomp"-system has beyond all the advantage that the growing on air slot in peat ..
discs results in a very great number of active roots, which ensures a good start and good growth of the plants. The system is comparatively inexpensive and permits growing of huge quantities of plants within comparatively restricted ;~
spaces, and also the possibility to transport great quantities of plants from ,he nursery to the planting site within very restricted transport volumes~
Among the drawbacks of the "Multicomp"-system should ~ -be mentioned that the individual peat cubes obtained after ~.
moistening and expansion of the discs are susceptible to drying out and are also delicate to handle.
:` Objects of the Invention .:: ' '*
~: One important object of the invention has been to ~ circumvent the above mentioned limitations and drawbacks of :. ~he prior art germination and seedling promoting systems by ~ , providing a germination and seedling promoting method which : .
,...................................................................... : .:
promotes the development of a strong and richly branched ~` 20 out root system of the seedlings and which ensures that the :
`~ seedlings are well established as they are planted outt ~
:. , :
~ . Summary of the Invention ~.,". , .
`; According to the invention there is provided a method ~...................... . .
~ for growing plants such as trees, comprising steps of:
; (a) providing a substantially dry substrate, having at least one seed therein, with a downwardly open cover of water-: 27 impermeable material, the substrate and cover being shaped to be capable of independent erect support on a lower side thereof; (b) at a place remote from the final planting site, ~ ~ moistening the substrate through its downwardly open cover bc/~'-10768~
to enable germination of the seed to start; (c) supporting the moistened substrate so that the dovnwardly open side of the cover and the substrate exposed at such open side are substantially exposed to an air space; (d) while so supported, permitting germination of the seed, and emergence of the seedling from the cover to take place under selected conditions until a substantial root system has been established within the substrate with the downward growth of numerous roots of the seedling being arrested by their emergence through the downwardly open cover into the air space; (e) thereafter, transporting the emerged seedling to the final planting site; and (f) planting it there, the planting consisting of placing the growing seedling, with the arrested emerged roots directed against the surface of the soil, the cover being left thereon intactly.
Brief Figure Description .j '' .
~ In order that the invention may be clearly understood, i~ it will now be described, by way of example, with reference to the accompanying drawing which shows, in section and very schematically, a germination and seedling promoting ; unit to be used with the method according to the invention, ` Description of Preferred Embodiments The plant growing unit comprises a growth substrate in : the form of an expanded peat body 10, covered by a water ~, .. .
` impermeable cover 11 of a thin sheet of plastic material or the like. The cover ll has a small opening 12 at the upper side thereof, and it has a slightly larger opening 13 at the under side thereof. The unit rests on a net or grid shaped support 1~, which in turn rests on a suitable frame 15,16.
,i~J~
bc/ !,~
~107680~
To start with, the peat body 10 consists of a comparatively thin disc of compressed peat which is provided :
with one or more seeds, preferably in a small recess in the upper side of the body. Then, the disc is provided with the cover 11. A plurality of units of th~s kind are then placed on the support 14 and are thoroughly moistened whereby the peat expands strongly.
After some time the seed or the seeds germinate and the '' ;;
. : .
.`~ . .
., , .
~, - 4a -bc/
-.~
~-ff~680`4 start up ~f the seedling takes place whereupon the units are left resting on the support 14 during the growth of the seedling.
During the continued plant growth a richly branched out root system is obtained. This is due to the fact that as the downwardly extending root threads come out through the lowermost opening 13 of the cover they stop growing, as they cannot grow in air, and instead new root threads are branched out into the cubstrate. Therefore, when the seedling is well established in the unit~ there exists `
within the area of the opening 13 a very large number of root threads which are prepared to immediate grow in into the mineral soil, as the plant is placed out in a ground preparation cavity.
By a suitable choice of material of the cover, such as plastic, the heat absorption of the unit may be controlled to suit the climate. The heat radiation from the whole range of wave lengths may be selectively controlled to optimal intensity for the units. The heat emittance during the colder part of the day may be positively affected in the same way. Thus, the unit forms a miniature green-house wh~ch follows the seedling through the nursery~ during the ,.
transport and out to the final planting site. This positive ` effect remains until the plant has grown up and become so big that its own shadow covers the unit.
The expression controlled conditions has been used above to cover maintaining~ in each particular case, the best conditions Eor germination, start up of the seedling and growth of the plant with respect to degree of moisture, ;~ ~
~emperature, fertilization~ termperature of the ambient -,, ~ .
;`, `,' ' ~ ~ 5 ~ `
~L~76~3~4 ::
air etc.
~ t will be reali~ed that the prior art seed disc, which is somewhat complicated in that it has to be provided with some form of protection against attacks from rodents, is utilized in a simplified version for plant growing in a nursery while using a method which slightly resembles the "Multicomp"-system.
The water impermeable cover does not only reduce the risk for drying out and give a better heat maintenance ability but also gives the advantage that the root body of the established plant forms a firm and sturdy unit which can stand considerable stresses by transport and planting, without damages. Further, the method according to the in-vention also permits sorting out and reuse of so called O-units, i.e. units wherein no germination and start up of a seedling has occurred. Of course, this was not possible ~-previously as the seed discs where laid out dry for ger-mination and start up of the seedling at the planting site.
The method according to the invention remedies to a large extent the previous seasonal limitation to the spring and early summer, which has been a problem in the past.
Nhen the seedling is well established in its substrate (the disc), the number of plants that die is small, the growth is excellent and all problems with rodents are naturally avoided.
~ ith a]Ll previously known planting methods it has been necessary to dig down the roots into the mineral soil. Further it has been necessary to pack the soil around the roots.
According to the invention, on the contrary, it is possible to lay out the unit with a living plant on the ground surface, ~0~6~304 wiehout diggin8 it down, which is completely unique. During this phase, the unit itself forms a protection against evapo-ration also from the ground. The roots may see~ their way down into the mineral soil under the hide of the unit.
The active root thread tips resu]Lt in that the roots grow out fast so that the plant grows fixed to the soil in the shortest possible time~ ~
: ~ i ,~
.
'' , ,`~ :
~ .
'' '',''`
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for growing plants such as trees, comprising steps of:
(a) providing a substantially dry substrate, having at least one seed therein, with a downwardly open cover of water-impermeable material, the substrate and cover being shaped to be capable of independent erect support on a lower side thereof;
(b) at a place remote from the final planting site, moistening the substrate through its downwarly open cover to enable germination of the seed to start;
(c) supporting the moistened substrate so that the downwardly open side of the cover and the substrate exposed at such open side are substantially exposed to an air space;
(d) while so supported, permitting germination of the seed, and emergence of the seedling from the cover to take place under selected conditions until a substantial root system has been established within the substrate with the downward growth of numerous roots of the seedling being arrested by their emergence through the downwardly open cover into the air space;
(e) thereafter, transporting the emerged seedling to the final planting site; and (f) planting it there, said planting consisting of placing the growing seedling, with the arrested emerged roots directed against the surface of the soil, the cover being left thereon intactly.
(a) providing a substantially dry substrate, having at least one seed therein, with a downwardly open cover of water-impermeable material, the substrate and cover being shaped to be capable of independent erect support on a lower side thereof;
(b) at a place remote from the final planting site, moistening the substrate through its downwarly open cover to enable germination of the seed to start;
(c) supporting the moistened substrate so that the downwardly open side of the cover and the substrate exposed at such open side are substantially exposed to an air space;
(d) while so supported, permitting germination of the seed, and emergence of the seedling from the cover to take place under selected conditions until a substantial root system has been established within the substrate with the downward growth of numerous roots of the seedling being arrested by their emergence through the downwardly open cover into the air space;
(e) thereafter, transporting the emerged seedling to the final planting site; and (f) planting it there, said planting consisting of placing the growing seedling, with the arrested emerged roots directed against the surface of the soil, the cover being left thereon intactly.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7609926A SE7609926L (en) | 1976-09-08 | 1976-09-08 | CULTIVATION PROCEDURE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1076804A true CA1076804A (en) | 1980-05-06 |
Family
ID=20328833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA286,226A Expired CA1076804A (en) | 1976-09-08 | 1977-09-07 | Method for growing plants |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5354549A (en) |
| CA (1) | CA1076804A (en) |
| DE (1) | DE2740511A1 (en) |
| DK (1) | DK397577A (en) |
| FI (1) | FI772648A (en) |
| FR (1) | FR2363982A1 (en) |
| NO (2) | NO773089L (en) |
| SE (1) | SE7609926L (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010048717A1 (en) * | 2008-10-31 | 2010-05-06 | David Larsen | Seed and plant growth medium module |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7713240L (en) * | 1977-11-23 | 1979-05-24 | Heinstedt David | KIT AND DEVICE FOR CULTIVATION |
| IE48541B1 (en) * | 1978-08-28 | 1985-02-20 | Ingerstedt Sven Ake | Method of growing plants |
-
1976
- 1976-09-08 SE SE7609926A patent/SE7609926L/en not_active Application Discontinuation
-
1977
- 1977-09-06 FI FI772648A patent/FI772648A/en not_active Application Discontinuation
- 1977-09-07 FR FR7727092A patent/FR2363982A1/en active Granted
- 1977-09-07 NO NO773089A patent/NO773089L/en unknown
- 1977-09-07 CA CA286,226A patent/CA1076804A/en not_active Expired
- 1977-09-07 DK DK397577A patent/DK397577A/en not_active Application Discontinuation
- 1977-09-08 JP JP10833277A patent/JPS5354549A/en active Pending
- 1977-09-08 DE DE19772740511 patent/DE2740511A1/en not_active Withdrawn
-
1982
- 1982-11-19 NO NO823880A patent/NO823880L/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010048717A1 (en) * | 2008-10-31 | 2010-05-06 | David Larsen | Seed and plant growth medium module |
| US20110162270A1 (en) * | 2008-10-31 | 2011-07-07 | David Larsen | Seed and plant growth medium module |
| US8458955B2 (en) * | 2008-10-31 | 2013-06-11 | David Larsen | Seed and plant growth medium module |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2363982B3 (en) | 1980-07-04 |
| NO823880L (en) | 1978-03-09 |
| FI772648A (en) | 1978-03-09 |
| JPS5354549A (en) | 1978-05-18 |
| DK397577A (en) | 1978-03-09 |
| NO773089L (en) | 1978-03-09 |
| SE7609926L (en) | 1978-03-09 |
| FR2363982A1 (en) | 1978-04-07 |
| DE2740511A1 (en) | 1978-03-09 |
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